/* ---------- Fonts (self-hosted, variable) ---------- */
@font-face {
  font-family: "Inter";
  src: url("../assets/fonts/Inter-Variable.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Space Grotesk";
  src: url("../assets/fonts/SpaceGrotesk-Variable.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("../assets/fonts/JetBrainsMono-Variable.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

/* ---------- Reset & base ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

:root {
  --bg: #08090c;
  --bg-alt: #0d0f14;
  --surface: #12141a;
  --surface-hover: #171a22;
  --border: #23262f;
  --text: #e9edf3;
  --text-muted: #8a8f9c;
  --text-dim: #565b68;
  --accent: #6ee7c7;
  --accent-2: #7c8cf8;
  --accent-3: #f8a4c2;
  --gradient: linear-gradient(120deg, var(--accent), var(--accent-2));
  --radius: 14px;
  --max-w: 1080px;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;
  --font-head: "Space Grotesk", "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", monospace;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

::selection { background: var(--accent); color: #04140f; }

/* ---------- Background decoration ---------- */
.bg-grid {
  position: fixed; inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 64px 64px;
  z-index: -2;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 100%);
}

.bg-glow {
  position: fixed;
  top: -20%; left: 50%;
  width: 900px; height: 900px;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(124,140,248,0.16) 0%, rgba(110,231,199,0.08) 40%, transparent 70%);
  z-index: -1;
  pointer-events: none;
}

.cursor-glow {
  position: fixed;
  top: 0; left: 0;
  width: 440px; height: 440px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(110,231,199,0.10) 0%, rgba(124,140,248,0.05) 45%, transparent 72%);
  transform: translate(-50%, -50%);
  z-index: 1;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s ease;
  will-change: transform;
}
.cursor-glow.active { opacity: 1; }
@media (hover: none), (prefers-reduced-motion: reduce) {
  .cursor-glow { display: none; }
}

/* ---------- Layout helpers ---------- */
.section-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 120px 0; position: relative; }
.section:nth-of-type(even) { background: linear-gradient(180deg, transparent, rgba(255,255,255,0.012), transparent); }

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 14px;
  text-transform: uppercase;
}

.section-title {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  font-weight: 600;
  margin-bottom: 56px;
  max-width: 640px;
  letter-spacing: -0.01em;
}

/* ---------- Reveal-on-scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(.2,.8,.2,1), transform 0.7s cubic-bezier(.2,.8,.2,1);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 500;
  transition: all 0.25s ease;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient);
  color: #05130f;
  font-weight: 600;
}
.btn-primary:hover { filter: brightness(1.08); transform: translateY(-2px); }

.btn-outline {
  border-color: var(--border);
  color: var(--text);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

.btn-ghost {
  color: var(--text-muted);
  padding: 8px 18px;
  border: 1px solid var(--border);
  font-size: 0.85rem;
}
.btn-ghost:hover { color: var(--text); border-color: var(--accent-2); }

/* ---------- Nav ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(8,9,12,0.6);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, background 0.3s ease;
}
.nav.scrolled {
  border-bottom-color: var(--border);
  background: rgba(8,9,12,0.85);
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: -0.02em;
}
.logo .dot { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-link {
  font-size: 0.9rem;
  color: var(--text-muted);
  position: relative;
  transition: color 0.2s ease;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0; bottom: -6px;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.25s ease;
}
.nav-link:hover { color: var(--text); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }
.nav-link.active { color: var(--text); }

.nav-actions { display: flex; align-items: center; gap: 16px; }

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.menu-toggle span {
  width: 22px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

/* ---------- Command palette trigger ---------- */
.cmdk-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-dim);
  font-size: 0.82rem;
  font-family: var(--font-body);
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.cmdk-trigger:hover, .cmdk-trigger:focus-visible { border-color: var(--accent-2); color: var(--text-muted); }
.cmdk-trigger kbd {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 2px 6px;
  border: 1px solid var(--border);
  border-radius: 5px;
  color: var(--text-dim);
}

/* ---------- Command palette ---------- */
.cmdk-overlay {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: min(16vh, 140px);
}
.cmdk-overlay[hidden] { display: none; }

.cmdk-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(4,5,7,0.7);
  backdrop-filter: blur(3px);
}

.cmdk-panel {
  position: relative;
  width: min(560px, 90vw);
  max-height: 60vh;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 24px 60px rgba(0,0,0,0.5);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: cmdk-in 0.18s cubic-bezier(.2,.8,.2,1);
}
@keyframes cmdk-in {
  from { opacity: 0; transform: translateY(-8px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.cmdk-input-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  color: var(--text-dim);
  flex-shrink: 0;
}
.cmdk-input-wrap input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
}
.cmdk-input-wrap input::placeholder { color: var(--text-dim); }
.cmdk-input-wrap kbd {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 2px 7px;
  border: 1px solid var(--border);
  border-radius: 5px;
  color: var(--text-dim);
}

.cmdk-list {
  overflow-y: auto;
  padding: 8px;
}
.cmdk-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 10px;
  cursor: pointer;
  color: var(--text-muted);
}
.cmdk-item .cmdk-item-main { display: flex; align-items: center; gap: 12px; }
.cmdk-item svg { color: var(--accent); flex-shrink: 0; }
.cmdk-item-label { color: var(--text); font-size: 0.94rem; }
.cmdk-item-hint {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
}
.cmdk-item.active { background: var(--surface-hover); }
.cmdk-empty {
  padding: 24px 14px;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.9rem;
}

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 80px;
}

.hero-inner { max-width: 760px; }

.hero-avatar {
  width: 84px;
  height: 84px;
  border-radius: 24px;
  border: 1.5px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-head);
  font-size: 1.7rem;
  font-weight: 700;
  background: linear-gradient(150deg, rgba(110,231,199,0.1), rgba(124,140,248,0.08));
  background-clip: padding-box;
  position: relative;
  margin-bottom: 28px;
}
.hero-avatar::before {
  content: "";
  position: absolute;
  inset: -1.5px;
  border-radius: 24px;
  padding: 1.5px;
  background: var(--gradient);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0.6;
}
.hero-avatar {
  background-image: linear-gradient(150deg, rgba(110,231,199,0.12), rgba(124,140,248,0.08));
  color: var(--accent);
}

.eyebrow {
  font-family: var(--font-mono);
  color: var(--accent-2);
  font-size: 0.95rem;
  margin-bottom: 14px;
}

.hero-name {
  font-family: var(--font-head);
  font-size: clamp(2.8rem, 8vw, 5.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.02;
  background: linear-gradient(120deg, #fff 30%, var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-role {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.4vw, 1.35rem);
  color: var(--accent);
  min-height: 1.6em;
}

.cursor {
  animation: blink 1s step-start infinite;
  color: var(--text-muted);
}
@keyframes blink { 50% { opacity: 0; } }

.hero-desc {
  margin-top: 28px;
  max-width: 620px;
  color: var(--text-muted);
  font-size: 1.05rem;
}

.hero-actions {
  margin-top: 38px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-socials {
  margin-top: 44px;
  display: flex;
  gap: 22px;
}
.hero-socials a {
  color: var(--text-muted);
  transition: color 0.2s ease, transform 0.2s ease;
}
.hero-socials a:hover { color: var(--accent); transform: translateY(-3px); }

.scroll-cue {
  position: absolute;
  bottom: 40px; left: 50%;
  transform: translateX(-50%);
  width: 26px; height: 42px;
  border: 1px solid var(--border);
  border-radius: 20px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}
.scroll-cue span {
  width: 4px; height: 8px;
  background: var(--accent);
  border-radius: 2px;
  animation: scrollcue 1.6s ease-in-out infinite;
}
@keyframes scrollcue {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(14px); opacity: 0; }
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 56px;
  align-items: start;
}

.about-text { color: var(--text-muted); font-size: 1.05rem; }
.about-text strong { color: var(--text); font-weight: 600; }

.about-facts { display: flex; flex-direction: column; gap: 20px; }

.fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.fact-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.fact-value { font-weight: 600; font-size: 1rem; }
.fact-sub { color: var(--text-dim); font-size: 0.85rem; }

/* ---------- Skills ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.skill-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 0.25s ease, transform 0.25s ease;
}
.skill-card:hover { border-color: var(--accent-2); transform: translateY(-3px); }
.skill-card h3 {
  font-family: var(--font-head);
  font-size: 1.05rem;
  margin-bottom: 16px;
  color: var(--text);
}

.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tags span {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 6px 12px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-muted);
}
.tags-sm span { font-size: 0.72rem; padding: 4px 10px; }

/* ---------- Timeline ---------- */
.timeline { position: relative; }

.timeline-item {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 28px;
}

.timeline-dot {
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--gradient);
  margin-top: 8px;
  box-shadow: 0 0 0 4px rgba(110,231,199,0.12);
}

.timeline-content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 32px;
}

.timeline-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 4px;
}
.timeline-head h3 { font-family: var(--font-head); font-size: 1.25rem; }
.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
}
.timeline-org { color: var(--text-muted); margin-bottom: 16px; }

.timeline-list { margin-top: 20px; display: flex; flex-direction: column; gap: 12px; }
.timeline-list li {
  color: var(--text-muted);
  font-size: 0.95rem;
  padding-left: 20px;
  position: relative;
}
.timeline-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 6px; height: 6px;
  background: var(--accent-2);
  border-radius: 50%;
}
.timeline-list strong { color: var(--text); }

/* ---------- Projects ---------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  perspective: 1200px;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: border-color 0.25s ease, transform 0.15s ease, background 0.25s ease;
  transform-style: preserve-3d;
  will-change: transform;
}
.project-card:hover {
  border-color: var(--accent-2);
  background: var(--surface-hover);
}
@media (prefers-reduced-motion: reduce), (hover: none) {
  .project-card { transform: none !important; }
}

.project-preview {
  height: 96px;
  border-radius: 10px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.85);
  background-size: 200% 200%;
  animation: preview-shift 8s ease infinite;
}
@keyframes preview-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
.preview-ai { background-image: linear-gradient(120deg, #1d3b34, #16213e, #1d3b34); }
.preview-garage { background-image: linear-gradient(120deg, #3b2a1d, #21243e, #3b2a1d); }
.preview-parking { background-image: linear-gradient(120deg, #1d2b3b, #2e1d3e, #1d2b3b); }

.project-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}
.project-top h3 { font-family: var(--font-head); font-size: 1.15rem; }

.project-links { display: flex; gap: 14px; }
.project-links a { color: var(--text-muted); transition: color 0.2s ease; }
.project-links a:hover { color: var(--accent); }

.project-desc { color: var(--text-muted); font-size: 0.92rem; margin-bottom: 16px; }

.project-list {
  display: flex; flex-direction: column; gap: 8px;
  margin-bottom: 20px;
  flex-grow: 1;
}
.project-list li {
  color: var(--text-muted);
  font-size: 0.85rem;
  padding-left: 16px;
  position: relative;
}
.project-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* ---------- Achievements ---------- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition: transform 0.25s ease, border-color 0.25s ease;
}
.stat-card:hover { transform: translateY(-3px); border-color: var(--accent); }

.stat-value {
  display: block;
  font-family: var(--font-head);
  font-size: 2.2rem;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat-label {
  display: block;
  margin-top: 6px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.edu-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 26px;
}
.edu-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 8px;
}
.edu-head h3 { font-size: 1rem; font-weight: 600; }
.edu-head span { font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-dim); white-space: nowrap; }
.edu-card p { color: var(--text-muted); font-size: 0.92rem; margin-bottom: 10px; }
.edu-score {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  padding: 4px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
}

.github-graph {
  margin-top: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
}
.github-graph-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}
.github-graph-head a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-2);
}
.github-graph-head a:hover { color: var(--accent); }
.github-graph-scroll { overflow-x: auto; }
.github-graph-scroll img { min-width: 640px; filter: saturate(1.1); }

/* ---------- Contact ---------- */
.contact-desc { color: var(--text-muted); max-width: 560px; margin-bottom: 44px; }

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.contact-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 22px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.25s ease, transform 0.25s ease;
}
.contact-card:hover { border-color: var(--accent); transform: translateY(-3px); }
.contact-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.contact-value { font-weight: 500; }

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--text-dim);
  font-size: 0.85rem;
}
.back-to-top { color: var(--text-muted); transition: color 0.2s ease; }
.back-to-top:hover { color: var(--accent); }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .about-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .edu-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .nav-links {
    position: fixed;
    top: 64px; left: 0; right: 0;
    flex-direction: column;
    background: rgba(8,9,12,0.97);
    backdrop-filter: blur(14px);
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-150%);
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }
  .nav-links.open { transform: translateY(0); opacity: 1; }
  .menu-toggle { display: flex; }
  .menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-toggle.open span:nth-child(2) { opacity: 0; }
  .menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .nav-actions .btn-ghost { display: none; }
  .cmdk-trigger span, .cmdk-trigger kbd { display: none; }
  .cmdk-trigger { padding: 8px; }
  .section { padding: 80px 0; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .hero-actions { flex-direction: column; align-items: stretch; }
}